1" Heavy Duty Side Grip Cleco Fasteners Click HERE for more information! Pack of 5 Side Grip Cleco Fasteners. 3/4" Gap x 1" Reach. Spring-loaded Side Grip Clecos apply a constant force without the need to drill any holes. These edge grip clamps are the perfect tool to lend an extra hand while working with different components such as metal, fiberglass or carbon fiber.